Lancing device user interface



FIG. 1 is a front view of a lancing device user interface showing our new design, the broken line drawing in the figure represent elements shown for illustrative purposes only and which form no part of the claimed design.

The broken line drawing of undefined portions in FIG. 1 represents a border surrounding the lancing device interface for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lancing device user interface, as shown and described. 